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Long runout mechanism of the Shenzhen 2015 landslide: insights from a two-phase flow viewpoint
Qiao Cheng1,2,3,4; Ou Guo-qiang1,2; Pan Hua-li1,2; Ouyang Chao-jun1,2; Jia Yang1,2,3
2018
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume15Issue:10Pages:2247-2265
SubtypeArticle
AbstractA catastrophic landslide occurred at Hongao dumpsite in Guangming New District of Shenzhen, South China, on December 20, 2015. An estimated total volume of 2.73x10(6) m(3) of construction spoils was mobilized during this event. The landslide traveled a long distance on a low-relief terrain. The affected area was approximately 1100 m in length and 630 m in width. This landslide made 33 buildings destroyed, 73 people died and 4 people lost. Due to the special dumping history and other factors, soil in this landfill is of high initial water content. To identify the major factors that attribute to the long runout character, a two-phase flow model of Iverson and George was used to simulate the dynamics of this landslide. The influence of initial hydraulic permeability, initial dilatancy, and earth pressure coefficient was examined through numerical simulations. We found that pore pressure has the most significant effect on the dynamic characteristics of Shenzhen landslides. Average pore pressure ratio of the whole basal surface was used to evaluate the degree of liquefaction for the sliding material. The evolution and influence factors of this ratio were analyzed based on the computational results. An exponential function was proposed to fit the evolution curve of the average pore pressure ratio, which can be used as a reasonable and simplified evaluation of the pore pressure. This fitting function can be utilized to improve the single-phase flow model.
KeywordDynamics Landslide Long runout Pore pressure Two-phase
DOI10.1007/s11629-017-4595-5
Indexed BySCI
WOS KeywordFINE-PARTICLE CONTENT ; PORE-FLUID PRESSURE ; DEBRIS FLOWS ; SHALLOW LANDSLIDES ; GRANULAR MATERIAL ; HAZARD ASSESSMENT ; GRAIN-SIZE ; MOTION ; MODEL ; MOBILIZATION
Language英语
Quartile4区
Funding ProjectNational Key R&D Program of China[2017YFC1502502] ; National Key R&D Program of China[2017YFC1502506] ; National Nature Science Foundation of China[41672318] ; National Nature Science Foundation of China[51679229] ; National Nature Science Foundation of China[41372331] ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS[SDS-135-1701] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2018405]
TOP
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000447295900013
Funding OrganizationNational Key R&D Program of China ; National Nature Science Foundation of China ; 135 Strategic Program of the Institute of Mountain Hazards and Environment, CAS ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
PublisherSCIENCE PRESS
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/24048
Collection山地灾害与地表过程重点实验室
Corresponding AuthorPan Hua-li
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Surface Proc & Hazards, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Anhui Univ Sci & Technol, Huainan 232001, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Qiao Cheng,Ou Guo-qiang,Pan Hua-li,et al. Long runout mechanism of the Shenzhen 2015 landslide: insights from a two-phase flow viewpoint[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(10):2247-2265.
APA Qiao Cheng,Ou Guo-qiang,Pan Hua-li,Ouyang Chao-jun,&Jia Yang.(2018).Long runout mechanism of the Shenzhen 2015 landslide: insights from a two-phase flow viewpoint.JOURNAL OF MOUNTAIN SCIENCE,15(10),2247-2265.
MLA Qiao Cheng,et al."Long runout mechanism of the Shenzhen 2015 landslide: insights from a two-phase flow viewpoint".JOURNAL OF MOUNTAIN SCIENCE 15.10(2018):2247-2265.
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